fixes issue with AM_PROG_AR and old versions of autoconf
adds checks for stdint.h inttypes.h headers
fixes `make distcheck`

The `make distcheck` command now completes successfully. To achieve that,
the option subdir-objects hat to be disabled because of a bug in automake.
See http://lists.gnu.org/archive/html/automake/2014-04/msg00003.html
Hopefully that will not cause further issues in distributions of andi.
updates man page
release v0.7
bumps version to v0.8-beta